html {
  box-sizing: border-box;
  font-size: 62.5%;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: inherit;
}
*:before, *:after {
  box-sizing: inherit;
}

body {
  width: 100%;
  height: 100vh;
  background-color: #fff;
  font-family: sans-serif;
}

.header {
  text-align: center;
  background: linear-gradient(60deg, #543ab7, #00acc1 100%);
  color: #fff;
}
.header .waves {
  width: 100%;
  height: 15vh;
  min-height: 100px;
  max-height: 100px;
  margin-bottom: -7px;
}
.header .waves .parallax use {
  animation: move_forever 25s cubic-bezier(0.55, 0.5, 0.45, 0.5) infinite;
}
.header .waves .parallax use:nth-of-type(1) {
  animation-delay: -2s;
  animation-duration: 7s;
}
.header .waves .parallax use:nth-of-type(2) {
  animation-delay: -3s;
  animation-duration: 10s;
}
.header .waves .parallax use:nth-of-type(3) {
  animation-delay: -4s;
  animation-duration: 13s;
}
.header .waves .parallax use:nth-of-type(4) {
  animation-delay: -5s;
  animation-duration: 20s;
}

@keyframes move_forever {
  from {
    transform: translateX(-90px);
  }
  to {
    transform: translateX(85px);
  }
}